Discussions By Condition: Allergies

Ongoing coughing yellow phegm/sputum and nasal drip

I was working in the garage for a few hours with no prior health issues yet the garage was dusty with paint dust residue on the floor and the wife was vaccuming the house and our central vac does not have an exhaust filter.....dust was entering the garage and I am only allergic to large quantities..........that day I started developing a sore throat which turned into fever for 2 days. I took Zpak antibiotics for 5 days starting the first day and went to work on the 3rd day.....on the fifth day I had some minor shortness of breath and increasing amounts of nasal yellow muscus and I am coughing out blobs of yellow mucus 10+ times per day...I went to ER for blood / flu tests and xray and they diagnosed me with sinusitis eventhough and I had no congestion pain just constant nasal drip and coughing out sputum/phlegm. They put me on Medrol(sterioids) and Ceftin antibiotic with no change in symptoms....the only thing that helps is Claritin 24hrs but the symptoms come back within 12 hrs.....it is now 2 weeks and giving up hope...please help!